670725 has 36 divisors (see below), whose sum is σ = 1315392. Its totient is φ = 324000.

The previous prime is 670711. The next prime is 670727. The reversal of 670725 is 527076.

It is not a de Polignac number, because 670725 - 2⁵ = 670693 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670727) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2340 + ... + 2610.

2⁶⁷⁰⁷²⁵ is an apocalyptic number.

It is an amenable number.

670725 is a deficient number, since it is larger than the sum of its proper divisors (644667).

670725 is a wasteful number, since it uses less digits than its factorization.

670725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 670725 is about 818.9780216831. The cubic root of 670725 is about 87.5349520229.

The spelling of 670725 in words is "six hundred seventy thousand, seven hundred twenty-five".